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Linking my account jerry-sl on GitHub with my address 5CRtUCqUz2AYx8yp9K4jhHi66sTEVWPtq8TnF7MjCG5A69hc on Substrate in, and the challenge code is: cc3f0380fc9dc3fcacaecd06d1b2db78. #LitentryVerifyMyAddress

while true; do
pid=`ps -ef |grep binary_name |grep -v grep |awk '{print $2}'`
if [ -n "$pid" ]; then
kill -15 $pid
echo "The process is exiting, it may take some time, forcing the exit may cause damage to the database, please wait patiently..."
sleep 1
echo "binary_name process killed successfully!"
jerry-sl / System
Created March 5, 2019 16:50 — forked from vasanthk/System
System Design Cheatsheet

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

  1. Clarify and agree on the scope of the system
  • User cases (description of sequences of events that, taken together, lead to a system doing something useful)
    • Who is going to use it?
    • How are they going to use it?
alias proxy="export ALL_PROXY=socks5://"
alias unproxy="unset ALL_PROXY"
alias ip="curl -i"
git config --global http.proxy 'socks5://'
git config --global https.proxy 'socks5://'
// 删除所有已经停止的container
docker rm -v $(docker ps -aq -f status=exited)
// 从dockerhub下拉镜像
docker pull redis
// 后台启动容器
docker run --name myredis -d redis
// 启动另外一个容器并链接到myredis:redis容器
docker run --rm -it --link myredis:redis redis /bin/bash
jerry-sl / .bashrc
Created June 23, 2018 06:30 — forked from vsouza/.bashrc
Golang setup in Mac OSX with HomeBrew. Set `GOPATH` and `GOROOT` variables in zshell, fish or bash.
# Set variables in .bashrc file
# don't forget to change your path correctly!
export GOPATH=$HOME/golang
export GOROOT=/usr/local/opt/go/libexec
export PATH=$PATH:$GOPATH/bin
export PATH=$PATH:$GOROOT/bin
jerry-sl / gox.text
Created June 18, 2018 05:49 — forked from achun/gox.text
go get
go get -u
go get -u
go get -u
go get -u
go get -u
go get -u
go get -u
go get -u
go get -u
go get -u
var fs = require('fs');
var parse = require('csv-parse');
var Web3 = require('web3');
var abi = require('./abi.json');
var _ = require('lodash');
const Tx = require('ethereumjs-tx');
var web3 = new Web3(new Web3.providers.HttpProvider(""));
//var inputFile = 'data.csv';
jerry-sl /
Created June 3, 2018 08:51 — forked from joepie91/
Secure random values (in Node.js)

Not all random values are created equal - for security-related code, you need a specific kind of random value.

A summary of this article, if you don't want to read the entire thing:

  • Don't use Math.random(). There are extremely few cases where Math.random() is the right answer. Don't use it, unless you've read this entire article, and determined that it's necessary for your case.
  • Don't use crypto.getRandomBytes directly. While it's a CSPRNG, it's easy to bias the result when 'transforming' it, such that the output becomes more predictable.
  • If you want to generate random tokens or API keys: Use uuid, specifically the uuid.v4() method. Avoid node-uuid - it's not the same package, and doesn't produce reliably secure random values.
  • If you want to generate random numbers in a range: Use random-number-csprng.

You should seriously consider reading the entire article, though - it's